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virtual memory access for gdbstub

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@581 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-01-24 15:23:36 +00:00
parent 3cf1e035ba
commit 13eb76e091
3 changed files with 152 additions and 49 deletions
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53
gdbstub.c
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@ -248,53 +248,6 @@ static int put_packet(char *buf)
return 0;
}
/* better than nothing for SOFTMMU : we use physical addresses */
#if !defined(CONFIG_USER_ONLY)
static int memory_rw(uint8_t *buf, uint32_t addr, int len, int is_write)
{
uint8_t *ptr;
if (addr >= phys_ram_size ||
((int64_t)addr + len > phys_ram_size))
return -1;
ptr = phys_ram_base + addr;
if (is_write)
memcpy(ptr, buf, len);
else
memcpy(buf, ptr, len);
return 0;
}
#else
static int memory_rw(uint8_t *buf, uint32_t addr, int len, int is_write)
{
int l, flags;
uint32_t page;
while (len > 0) {
page = addr & TARGET_PAGE_MASK;
l = (page + TARGET_PAGE_SIZE) - addr;
if (l > len)
l = len;
flags = page_get_flags(page);
if (!(flags & PAGE_VALID))
return -1;
if (is_write) {
if (!(flags & PAGE_WRITE))
return -1;
memcpy((uint8_t *)addr, buf, l);
} else {
if (!(flags & PAGE_READ))
return -1;
memcpy(buf, (uint8_t *)addr, l);
}
len -= l;
buf += l;
addr += l;
}
return 0;
}
#endif
#if defined(TARGET_I386)
static void to_le32(uint8_t *p, int v)
@ -514,16 +467,18 @@ int cpu_gdbstub(void *opaque, int (*main_loop)(void *opaque), int port)
put_packet("OK");
break;
case 'm':
env = cpu_gdbstub_get_env(opaque);
addr = strtoul(p, (char **)&p, 16);
if (*p == ',')
p++;
len = strtoul(p, NULL, 16);
if (memory_rw(mem_buf, addr, len, 0) != 0)
if (cpu_memory_rw_debug(env, mem_buf, addr, len, 0) != 0)
memset(mem_buf, 0, len);
memtohex(buf, mem_buf, len);
put_packet(buf);
break;
case 'M':
env = cpu_gdbstub_get_env(opaque);
addr = strtoul(p, (char **)&p, 16);
if (*p == ',')
p++;
@ -531,7 +486,7 @@ int cpu_gdbstub(void *opaque, int (*main_loop)(void *opaque), int port)
if (*p == ',')
p++;
hextomem(mem_buf, p, len);
if (memory_rw(mem_buf, addr, len, 1) != 0)
if (cpu_memory_rw_debug(env, mem_buf, addr, len, 1) != 0)
put_packet("ENN");
else
put_packet("OK");